Process for manufacturing carbon papers



Aug. 28, 1934: A. DE PLANCHE 1,972,011

' rnocsss FOR MANUFACTURING CARBON urns Filed May 26, 1932 3Sheets-Sheet l Pep Mme/7a Aug. 28, 1934. A. DEPLANCHE 1,972,011

PROCESS FOR muumcwum ue CARBON nuns Filed May 26, 1932 3 Sheets-Sheet 22 o I o O o o O H 'Dep/anch e.

gay 777W '5 f Aug. 28, 1934. A. DEPLANCHE 1,972,011

PROCESS FOR MANUFACTURING CARBON PAPERS Filed my 26, 1952 3 Sheets-Sheeta Patented Au 28, 1934 Armand Deplanche, Paris, France Application 1Claim.

At the present time, the printed forms or carbon papers are obtained,either by printing with a typographic plate realized by means of a fattyink keeping its copying power as long as it is not wholly dry, or byprinting, at a hot state, of a wax ink solidifying by cooling and bypassing the paper so' printed upon a plate or a hollow cylinder cooledwith a flowing of cold water.

In all cases, the copying material laid upon the paper, givesasuperthickness which maculates the next sheets when these papers arestacked; it isnecessary therefore to realize a storage at the well knownmanner.

Further, by drying and after a relatively short time, the copying powerdecreases fastly. Besides, in all process the actual manufacturing ofthe multiple documents prevents to coat the entire faces of the sheetsand peripherical margins 20 are always necessary. In fact, if thesemargins are dispensed with, when the sheets are cut off and under theaction of the cutting blade, the copying material is reported upon thecorresponding non printed sheets; a

This invention has for object to remedy to the aforesaid inconveniencesand relates to a process for manufacturing carbon papers which consiststo lay the copying material in'a thin layer, at a manner known per se,upon the paper,- but characterized in that this material is incorporatedby a pressure, at a hot state, into the paper, the excess ofmaterialbeing preferably removed so as to let substantially nosuperthickness on the paper.

The invention has also for its object to perfect the incorporation ofthe material by pressure into the paper, by a drying with heating ofthis material in order to obtain carbo'n sheets keeping indefinitelytheir copying power without maculating the adjacent sheets. I Theinvention has for further objectmeans to carrying out the process andparticularly the combination, in a same unit, .with a container orinkstand for the copying material, of a delivering drum for lying thismaterial upon the paper, of a scraper acting by pressure upon the paperpassed between it and a support preferably constituted by a heatingcylinder, so as this scraper acts both'as a scraper for removing thematerial in excess and as a pressing member for entering the materialinto the paper, and also as a hot drier for 'the copying material.

The invention has for further object printed forms with multiple carbonsheets the binding of which .is performed by May 26, 1932, Serial No.613,786 In France May 28, 1931 means of a pressed The invention has forfurther object an automatic machine performing the lying of the copy ingmaterial, the printing of the sheets, the binding and the cutting off ofthe latter. Such a machine is characterized by.the following featuresindependently applied or applied in all combinations:

(a) Each spool of fresh paper passes through a printing device,.isapplied upon a delivering drum dipping in an inkstand and thence passesbetween a drying pressing scraper and a. heating cylinder. Y

(b) The sheets provided with a carbon coating by the above means arethen superimposed for passing under circular toothed knives which makeperforations permitting to remove each sheet, thence pass betweenbinding wheels and are finally cut off by circular knives, a suitabledevice separating, at a'known' manner, each multiple document. I

(c) Regulating means are provided, for modifying the position or thepressure of the heating delivering cylinders, as wellas the position andpressure of the scraper. f

(d) The drying pressing scraper is' constituted by ablade introduced ina slot provided in a corresponding support, setting screws-permitting ofkeeping a perfectly plane, the pressing scraping heating plate. Y Theinvention relates also toother features which will appear in'thefollowing description in reference to the accompanying drawings given byway of example only.

Fig. '1 is a perspective view of a machine according to the invention.

Fig. 2 is a perspective view, at an enlarged scale, of a drying pressinginking device.

Fig. 3 is a perspective view,.at an enlarged scale, of a device forperforating, binding and cutting off the sheet coated-with carbon.

Fig. 4 is a lateral view, with sectional view showing with more details,the unit illustrated in Fig. 2;

Fig. 5 is afront view of the heating drying scraper.

Fig. 6 is a transverse sectional view of the heating drying scrapermounted in its support.

Fig. '7 is a front view of a blade limiting the thickness of thematerial on the delivering drum.

Fig. 8 is a front view of the delivering drum.

Fig. 9 is a partial perspective vew of a-flle of printed forms coatedwith carbon and manufactured with the automatic machine.

As previously stated, the process for manufacturing carbon papersconsists chiefly in the incorporation of the copying material in thepaper, by pressure in a hot state and realized by means of a dryingpressing scraper which .removes at the same time the material in excess.The drying of this material simultaneously with its incorporation allowsto obtain:

'(a) A paper coated with carbon which does not maculate and which doesnot necessitate an important pressure, such as that produced by apencil-joint or by a character of typewriter when making a report.

(b) Successive impressions more numerous than these obtained withordinary carbon papers.

(0) Not blurred printing as is ordinarily the case for the last typedsheets.

((1) Carbon papers which, from their nature, may be stacked withoutgiving rise to the incon-, veniences of the ordinary carbon papers whichmust be stacked on edge or put into boxes.

The machine hereafter described by way of example only, allows therealization of files of printed forms coated with carbon from spool offresh paper. These files of printed forms are wholly and automaticallymanufactured by the machine which delivers at its delivering end filesof printed forms coated with carbon, put together and counted.

This machine comprises a main frame 1 upon which are mounted thedifferent devices. In the example shown, the files of printed forms areconstituted by three sheets printed on one of their faces, two of thissheets having on the other face a laying of copying material.

The three sheets superimposed and assembled 2, 3 and 4, are fed outautomatically from spools 2a, 3a and4a mounted on correspondingsupports. Any number of spools can be provided, this member is afunction of the member of each document coated with carbom also, thecolour of this paper can vary according to the spools and thedestination of these documents.

The machine comprises for laying the copying material to units 5 one ofwhich 'is more particularly shown in perspective view at Fig. 2 and intransverse sectional view at Fig. 4. The machine includes also severalprinting devices of printed forms printing characters and other. Thesedevices which are shown at 6 in Fig. 1 do not necessitate a specialdescriptionas they are of a usual type which does not contemplate theinvention.

It would thereafter be described a unit 5 for incorporating the copyingmaterial into a sheet 4 for instance which has been previously printedby a known device 6.

In Fig. 4, the printed strip 4 which is guided by a roller '1 passesupon the rollers 8 and 9'for applying itself on a drum 10.

-The copying material is laid upon the sheet 4 by a drum 11 which dipsin a container or inkstand 12, a plate 13 limiting the amount of ink onthe drum 11.

In the example shown, files of double printed forms are simultaneouslyrealized which are subsequently separated. The inking drum 11 is shapedas shown in Fig.-& f or lying down two layers separated by a space 14.The plate 13 limiting the amount of ink is adjustable on its support 15'(Fig. 7) and provided with tongues- 16 which pass between. the usefulparts of drum 11 at the ends of the same. The spindle of the drum 11 ismounted on a rocking member 17 (Fig. 2) which allows, by the threadedrod 18 and the nuts 19 and 20, to adjust theposition of the inking drum11 for lying more or less material upon the strip 4.

The copying material laid upon the strip 4 by the inking drum 11 isincorporated into the paper by means of a drying pressing scraper 21which removes at the same time the excess of material which falls downinto the inkstand 12.

This drying pressing scraper 21 is mounted in a slot 22 of a support 23pivoted at its ends by the intermediary of eccentric weights 24. Thedrying pressing scraping blade is maintained in its support 23 by meansof screws 25 which allow by adjusting them to maintain the blade 21perfectly plane. This latter device constitutes one of the features ofthe invention.

the intermediary of Then the strip 4 treated as just stated passes onthe roller 26 on which it is gripped by the roller 2'7 but only in theparts not coated with materials. It is to be noted, according to theinvention,

that the drums or rollers 10-11 are heated as well as the inkstand froma suitable source and preferably by means of electrical resistances, theconnection wires of which are indicated at 28.

The pressure of the drying pressing scraper is adjusted by means of thescrew 29 which varies the stretching action of the spring 30 fixed tothe support 23.

The inkstand 12 is fed from a tank 31 heated by means of a pipe 32heated itself and-controlled by a valve.

The strips provided with the copying material and dried as previouslystated are superimposed at 33 (Fig. 3) and pass simultaneously undertoothed circular knifes 34 and-25 which realize perforationspermittingtodetach any sheet without breaking the binding of the filesof printed forms. The superimposed strips pass subsequently betweenwheels 36 provided with peripherical projections which perform a bindingand finally pass under side circular knifes 3'7 and 38 and a centralcircular'knife 39. The strips so bound together are finally cut 011 by ablade 40 at a 'known manner.

-facturing of file of printed forms coated with carbon is a mere exampleable of numerous modifications which so long as they do not change thefeatures previously stated nor the purpose aimed, are comprised in thescope of the invention.

What I claim as my invention and desire to secure by Letters Patent is:

The process of coating paper with copying material consisting inapplying heated copying material in a liquid form. to one surface of astrip of paper, passing the paper so treated around a heated roller withthe untreated surface of-the paper contacting with the roller to dry thepaper,

and applying a scraper underpressure to the treated surface of the paperon the heated rollerto press the paper against the roller to force theliquid copying material into the body of the paper

